.nobutton {
  margin: 0;
  padding: 0;
  background: transparent;
  border: none;
}

.nobutton::after {
  border: none;
}

.flex {
  display: flex;
}

.flex-space-a {
  display: flex;
  justify-content: space-around;
}

.flex_1 {
  flex: 1;
}

.flex_2 {
  flex: 2;
}

.flex_3 {
  flex: 3;
}

.flex-pack-j {
  display: flex;
  justify-content: space-between;
}

.flex-start {
  display: flex;
  justify-content: flex-start;
}

.flex-end {
  display: flex;
  justify-content: flex-end;
}

.flex-align-center {
  display: flex;
  align-items: center;
}

.flex-align-start {
  display: flex;
  align-items: flex-start;
}

.flex-align-end {
  display: flex;
  align-items: flex-end;
}

.flex-wrap {
  display: flex;
  flex-wrap: wrap;
}

.flex-row {
  display: flex;
  flex-direction: row;
}

.flex-column {
  display: flex;
  flex-direction: column;
}

.align-c {
  align-items: center;
}

.flex-center {
  display: flex;
  justify-content: center;
}

.flex-g {
  flex-grow: 1;
}

.bottom-fixed {
  position: fixed !important;
  bottom: 0;
  left: 0;
  z-index: 99;
}

.ell {
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}

.row-number-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.mask {
  width: 100%;
  height: 100%;
  position: fixed;
  left: 0;
  top: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 9000;
}